The Nokia N75 is one of those great little phones that is under its big brother (N95)'s shadows all the time. This phone is US (AT&T) 3G ready featuring 2 megapixel camera and is running the Symbian S60 3rd edition just as the N95. This means that the same web browser with mini map, application-support as its older sibling are available.
The flip design makes this phone practical and slim. With 40MB internal memory (a bit anemic) however support for microSD allowing great multimedia flexibility.
Amazon.com has it for $0.01 with a new contract. Pretty good deal if you've been eyeing a Symbian-based smartphone.
Nokia N75 at Amazon.com - $0.01